Apologies in advance if this sounds harsh; it's not written that way, but it might come across that way, I'm not sure.
"I need to find out if it is a trait of autistic people to be abusive and how to make them see that their behaviour is."
It isn't. It really isn't.
There are ways in which the two things can be linked, just like struggles or inabilities or differences allistic people have can be linked to them being abusive, when they are.
And one of the most frightening autistic people I've known was that way in part because they were high in empathy but couldn't handle feeling other people's feelings and lashed out.
Empathy isn't a magic bullet.
It helps as a shortcut, but you can lack it completely and still be a good person if you put your mind to it, especially if you have a strong sense of justice or are good at figuring out cause and effect. You can have lots of it and be a terrible person, or very little and a wonderful one; it depends on the choices you make.
And as I've mentioned that, I must also state for the record that the people who've been most sensitive, considerate, kind, selfless and supportive to me have also been autistic.
I'm sorry, because I know you're in a really tough place mentally, at the moment. But if he cared, he'd be taking the initiative to look for a solution to this situation himself. Whether by changing his behaviour or leaving you. If unsolvable issues of mine were causing someone else that much pain, I would end the relationship for the sake of them and our child. Whether the issues were an inherent part of a disability I had or not.
It sounds like you don't want to go down this route right now, but there's probably no harm in saying that I recommend you look into codependency and/or the overfunctioning/underfunctioning relationship dynamic.
I don't say that to blame you for ending up at this point, I just think such concepts, and relevant advice, might be of more practical use to you than treating his behaviour as an autistic trait is likely to be.